US4212449A - Swing-arm device for a vehicle lift - Google Patents

Swing-arm device for a vehicle lift Download PDF

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Publication number
US4212449A
US4212449A US05/948,204 US94820478A US4212449A US 4212449 A US4212449 A US 4212449A US 94820478 A US94820478 A US 94820478A US 4212449 A US4212449 A US 4212449A
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United States
Prior art keywords
arm
carriage
vehicle
swing
strut
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US05/948,204
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English (en)
Inventor
Tozaburo Tsujimura
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Yasui Sangyo Co Ltd
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Yasui Sangyo Co Ltd
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Publication date
Application filed by Yasui Sangyo Co Ltd filed Critical Yasui Sangyo Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B66F7/04—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars hydraulically or pneumatically operated

Definitions

  • the present invention relates to a swing arm device for use in a vehicle lift, and especially to a swing arm device which is pivotally mounted so as to rotate about a vertical axis to a carriage moving up and down on a support pillar.
  • each of the two support pillars supports a carriage which moves up and down on it, and wherein from each carriage extends inwards, for example, two horizontal swing arms, in a fork-like configuration.
  • the free ends of these swing arms are inserted under the sides of the body of the vehicle, and then as the two carriages are raised the vehicle is lifted to the desired height.
  • Swing arms in currently used two-pillar vehicle lifts include the following features:
  • the position where the vehicle is supported i.e. the "setting position”
  • the position where the vehicle is supported i.e. the "setting position”
  • the swing arm free end about the support pillar as center it is not possible to go outside these limits; for example, to support the vehicle in a position very close to the support pillar. This is rather inconvenient.
  • Another object of the present invention is to provide a swing arm device such that, when not in use, it can be folded away, and thus not interfere with other work.
  • Another object of the present invention is to provide a swing arm device for a two-pillar vehicle lift in which, without arranging the two support pillars too far apart, when a vehicle has been raised, its door can be opened freely and fully, but which still may be used for a wide range of vehicles from small to large.
  • a swing arm device in a vehicle lift in which a carriage is raised and lowered up and down a support pillar, comprising a first arm disposed substantially horizontally and pivotally attached at its one end about a vertical axis to the said carriage, and a second arm disposed substantially horizontally and pivotally attached at its one end to the other end of the first arm remote from the carriage about a vertical axis, the other end of the second arm being adapted to support a vehicle.
  • locking devices are provided to lock the pivoting of the first arm about the carriage, and the second arm about the first arm.
  • FIG. 1 is a front view, partly cut away, of a two pillar vehicle lift provided with a swing arm device according to the present invention
  • FIG. 2 is an enlarged horizontal cross-section along the line II--II of FIG. 1;
  • FIG. 3 is an enlarged partly cut away view from the front of the section shown in FIG. 2;
  • FIG. 4 is an enlarged vertical section along the line IV--IV in FIG. 2;
  • FIG. 5 is a schematic plan view showing the arrangement when in use, and the arrangement when not in use, of the device of the other figures.
  • the level base 2 is provided at both of its right and left ends with side members 1 which extend forwards and backwards.
  • On this base are erected two support pillars 3, one at the right and one at the left, formed each with a horizontal cross-section of an outwards-facing U-shape.
  • To each of the support pillars 3 is fitted a carriage 4 whose horizontal cross-section is also of an outwards-facing U-shape.
  • the left and right support pillars 3, the carriages 4, and their associated equipment described below are completely symmetrically arranged, and accordingly the explanation given below is for the right hand support pillar 3 and carriage 4 only.
  • rollers 5 and 6 rotatably mounted on horizontal front-to-back axles 7 and 8 respectively. As these rollers 5 and 6 roll on the outer and inner surfaces of the support pillar 3, the carriage 4 can be lightly and easily moved up and down the pillar 3.
  • the carriage 4 is moved up and down the pillar 3 by a piston and cylinder expansion device 9 arranged within the support pillar 3.
  • a piston 11 projects from the upper end of a cylinder 10.
  • a fork-shaped trunnion 12 At the top end of the piston 11 is fixed a fork-shaped trunnion 12 through which a horizontal front-to-back axle 13 supports a pulley 14 so that it is free to turn.
  • a cable 15 made of wire, chain, or the like has one end attached to the inside of the support pillar 3 somewhat lower than the mid-height of the pillar, a middle portion of the cable 15 passes over the pulley 14, and the other end is attached to the axle 7 of the roller 5 of the carriage 4.
  • brackets 16 and 17 whose vertical cross-sections are front-and-back pointing U-shapes.
  • the front bracket 16 receives the folding type swing arm device 18, while the rear bracket 17 receives the telescoping type swing arm 19, which is not a part of the present invention.
  • the swing arm device 18 is composed basically of a horizontal first arm 21 whose base end is pivotally attached to the bracket 16 by a vertical axle 20, a horizontal second arm 23 whose base end is pivotally attached to the free end of the first arm 21 by a vertical axle 22, a first locking device 24 which prevents movement of the first arm 21 with respect to the bracket 16 when locked up, and a second locking device 25 which prevents movement of the second arm 23 with respect to the first arm 21 when it is locked up.
  • the first arm 21 is composed of two horizontal plates 21a and 21b of the form of scalene right angled triangles, arranged one above the other, with two strengthening plates 21c and 21d fixed between them parallel to their long sides. Near the vertex between the long side and the hypotenuse is pivotally attached the vertical axle 20, and near the vertex between the short side and the hypotenuse, in the portions of the plates 21a and 21b which project sideways beyond the strengthening plate 21d, is pivotally attached the vertical axle 22.
  • the second arm 23 is of substantially square tubular section, and at a central portion of its free end a support 26 is attached by directly screwing a threaded rod portion 27 projecting downwards from the center of the support member 26 into the arm 23. Thus a certain amount of height adjustment is available for the support member 26 by the threaded portion 27 being turned.
  • the support 26 is adapted to be placed underneath a vehicle and to support it.
  • the first locking device 24 consists basically of an axle socket 28, a lock axle 29, a locking screw 30, a handle 31, a vertical pin 32, and a strut 33.
  • the axle socket 28 is fixed to the upper surface of the top horizontal plate 21a of the first arm 21 at a roughly central position, somewhat towards the hypotenuse. It holds the lock axle 29 in such a way that it is free to rotate, but may not be lifted out vertically.
  • a horizontally aligned through hole 29a Near the top of this lock axle 29 projecting upwards from the axle socket 28 is formed a horizontally aligned through hole 29a and in the center of the top of the lock axle 21 is formed a threaded hole 29b which is coaxial with the lock axle 29 and communicates to the through hole 29a.
  • the locking screw 30 is screwed into this threaded hole 29b from the top.
  • the handle 31 may either be fixed to the top of the locking screw 31 or be fitted so as to be detachable.
  • the strut 33 passes through the horizontal through hole 29a in the lock axle 29, and slides freely therein, and its base end is pivotally attached to a vertical pin 32 mounted at a suitable position on the upper surface of the bracket 16.
  • the first locking device 24 is operated by screwing down the screw 30 by means of the handle 31 down onto the strut 33 tightly so as to grip it and clamp it to the lock axle 29, thus fixing the distance between the lock axle 29 and the vertical pin 32.
  • the first arm 21 is locked in place with respect to the bracket 16 and cannot be pivoted relative to it. This can be done when the first arm is in any desired position.
  • the second locking device 25 is of basically the same construction as the first locking device 24, and consists of an axle socket 28', a locking axle 29', a locking screw 30', a handle 31', a vertical pin 32', and a strut 33', which parts correspond to the same unprimed numbered parts of the first locking device 24, and have the same functions.
  • the axle socket 28 is fixed to the upper surface of the plate 21a of the first arm 21 at a position near the right-angled corner of the triangular shape.
  • the vertical pin 32' to which the base end of the strut 33' is pivoted is fixed to the upper surface of a central portion of the second arm 23.
  • the strut 33' is arranged to extend horizontally under the strut 33 of the first locking device. It will be seen that by use of the second locking device the first arm can be clamped into any desired position required with respect to the second arm, so that it can no longer pivot with respect to it.
  • the support member 26 when the first and second locking devices are in the unlocked state, it is seen that it is easily possible to position the support member 26 to any position within the arc drawn by the end of the second arm when the two arms are kept in a straight line and turned about the vertical axle 20.
  • the support member 26 can in fact be positioned very close to the support pillar, if need be. When the support member 26 is in the desired position of course it can be clamped therein by operation of the two locking devices.
  • the swing arm device 19 which is fitted to the rear bracket 17 is of the well-known expanding type. It is made up of a first arm 35 of square tubular form whose base end is pivotally attached to the bracket 17 by means of a vertical axle 34, a second arm 36 also of square tubular form whose base end is inserted into the free end of the first arm 35 so as to be slidable in and out, collinearly with the first arm 25, and a horizontal support member 38 which is mounted at the free end of the second arm 36 by means of a screwed for 37 so as to be rotatable and thus allow for a certain amount of height adjustment.
  • the support member 38 can be freely moved to any point within the annulus delimited by the arcs described by the support member 38 when the second arm is in the fully extended state, and when it is in the fully retracted state.
  • FIG. 5 when a vehicle is positioned on the two-pillar lift described above, it may, if required, be offset somewhat to the rear, due to the folding construction of the front swing arm device 18, so that it is easily possible to open the door of the vehicle while it is on the lift. This is because of the greater range of positional adjustment available with the swing arm device of the present invention.
  • the swing arm device 18 when not in use the swing arm device 18 can be snugly and securely folded away so that it is not an obstruction and does not get in the way of other work, and further, by use of the locking devices, it can be securely locked away in this position.
  • the use of the locking devices while the vehicle is elevated contribute greatly to safety of the lift in use by ensuring that the vehicle cannot be shifted sideways by rotation of the first or second arm.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Forklifts And Lifting Vehicles (AREA)
US05/948,204 1977-12-22 1978-10-03 Swing-arm device for a vehicle lift Expired - Lifetime US4212449A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP52-173403[U] 1977-12-22
JP1977173403U JPS5497971U (de) 1977-12-22 1977-12-22

Publications (1)

Publication Number Publication Date
US4212449A true US4212449A (en) 1980-07-15

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Application Number Title Priority Date Filing Date
US05/948,204 Expired - Lifetime US4212449A (en) 1977-12-22 1978-10-03 Swing-arm device for a vehicle lift

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US (1) US4212449A (de)
JP (1) JPS5497971U (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300659A (en) * 1980-03-17 1981-11-17 Silverstrand Thomas R Four-post hoist
US4500071A (en) * 1982-09-03 1985-02-19 Bagwell Bobby F Dual hydraulic lifts
US4553719A (en) * 1983-11-04 1985-11-19 David Ott Vehicle lifting system and method
US4976336A (en) * 1988-09-13 1990-12-11 Derlan Manufacturing Inc. Lifting apparatus and lifting arm assembly for use therein
US5318154A (en) * 1992-06-16 1994-06-07 Hellman Jr Robert R Column for load lifting devices
US6866124B1 (en) * 2002-06-11 2005-03-15 P. Michael Barkis Vehicle lift having diagonally offset support columns
EP1357079A3 (de) * 2002-04-26 2005-06-01 Otto Nussbaum GmbH & Co. KG Hebebühne für Kraftfahrzeuge
US20110286821A1 (en) * 2009-01-12 2011-11-24 Ningbo Wenbai Machinery Manufacturing Co., Ltd. Parking Deck Structure of Non-Dodging Three-Dimensional Parking Garage
US20160137470A1 (en) * 2013-06-27 2016-05-19 Gerhard Finkbeiner Lifting apparatus for lifting and lowering vehicles
US9840402B2 (en) * 2014-06-19 2017-12-12 Yasui Corporation Lift device for vehicle
CN108128732A (zh) * 2017-12-21 2018-06-08 营口市立德电子科技有限公司 汽车双柱龙门式举升机托盘支撑机构
DE102018105573A1 (de) * 2018-03-12 2019-09-12 Otto Nussbaum Gmbh & Co. Kg Hebebühne für kraftfahrzeuge
US20220106173A1 (en) * 2018-03-12 2022-04-07 Nussbaum Custom Lifts Gmbh Lifting platform for motor vehicles
US11613452B2 (en) 2019-12-06 2023-03-28 Canada Hydraulique Equipement Inc. Arm restraints for vehicle lift and vehicle lift including the same
US20230130107A1 (en) * 2021-10-25 2023-04-27 Ravaglioli S.P.A. Vehicle Lift
US20240246796A1 (en) * 2022-03-15 2024-07-25 BendPak, Inc. Two post lift with reversible offset telescoping lift arms
DE102020105446B4 (de) 2020-03-02 2025-03-20 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Adapter für eine Hebebühne

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002588A (en) * 1958-06-23 1961-10-03 Charpigny Marcel Lift for automobiles
US3315764A (en) * 1965-11-10 1967-04-25 Autoquip Corp Automobile lift
US3536162A (en) * 1968-01-25 1970-10-27 Autoquip Corp "u" frame hydraulic vehicle lift

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5511119B2 (de) * 1974-03-20 1980-03-22

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002588A (en) * 1958-06-23 1961-10-03 Charpigny Marcel Lift for automobiles
US3315764A (en) * 1965-11-10 1967-04-25 Autoquip Corp Automobile lift
US3536162A (en) * 1968-01-25 1970-10-27 Autoquip Corp "u" frame hydraulic vehicle lift

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300659A (en) * 1980-03-17 1981-11-17 Silverstrand Thomas R Four-post hoist
US4500071A (en) * 1982-09-03 1985-02-19 Bagwell Bobby F Dual hydraulic lifts
US4553719A (en) * 1983-11-04 1985-11-19 David Ott Vehicle lifting system and method
US4976336A (en) * 1988-09-13 1990-12-11 Derlan Manufacturing Inc. Lifting apparatus and lifting arm assembly for use therein
US5318154A (en) * 1992-06-16 1994-06-07 Hellman Jr Robert R Column for load lifting devices
EP1357079A3 (de) * 2002-04-26 2005-06-01 Otto Nussbaum GmbH & Co. KG Hebebühne für Kraftfahrzeuge
US6866124B1 (en) * 2002-06-11 2005-03-15 P. Michael Barkis Vehicle lift having diagonally offset support columns
US20110286821A1 (en) * 2009-01-12 2011-11-24 Ningbo Wenbai Machinery Manufacturing Co., Ltd. Parking Deck Structure of Non-Dodging Three-Dimensional Parking Garage
US20160137470A1 (en) * 2013-06-27 2016-05-19 Gerhard Finkbeiner Lifting apparatus for lifting and lowering vehicles
US10077178B2 (en) * 2013-06-27 2018-09-18 Gerhard Finkbeiner Lifting apparatus for lifting and lowering vehicles
US9840402B2 (en) * 2014-06-19 2017-12-12 Yasui Corporation Lift device for vehicle
CN108128732A (zh) * 2017-12-21 2018-06-08 营口市立德电子科技有限公司 汽车双柱龙门式举升机托盘支撑机构
DE102018105573A1 (de) * 2018-03-12 2019-09-12 Otto Nussbaum Gmbh & Co. Kg Hebebühne für kraftfahrzeuge
CN110255434A (zh) * 2018-03-12 2019-09-20 奥特纳博有限责任及股份两合公司 用于机动车的升降平台
EP3549900A1 (de) 2018-03-12 2019-10-09 Otto Nussbaum GmbH & Co. KG Hebebühne für kraftfahrzeuge
US20220106173A1 (en) * 2018-03-12 2022-04-07 Nussbaum Custom Lifts Gmbh Lifting platform for motor vehicles
CN110255434B (zh) * 2018-03-12 2022-10-18 纳博定制升降机股份有限公司 用于机动车的升降平台
US12071330B2 (en) * 2018-03-12 2024-08-27 Nussbaum Custom Lifts Gmbh Lifting platform for motor vehicles
US11613452B2 (en) 2019-12-06 2023-03-28 Canada Hydraulique Equipement Inc. Arm restraints for vehicle lift and vehicle lift including the same
DE102020105446B4 (de) 2020-03-02 2025-03-20 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Adapter für eine Hebebühne
US20230130107A1 (en) * 2021-10-25 2023-04-27 Ravaglioli S.P.A. Vehicle Lift
US12030756B2 (en) * 2021-10-25 2024-07-09 Vehicle Service Group Italy, S.R.L. Vehicle lift
US20240246796A1 (en) * 2022-03-15 2024-07-25 BendPak, Inc. Two post lift with reversible offset telescoping lift arms
US12454447B2 (en) * 2022-03-15 2025-10-28 BendPak, Inc. Two post lift with reversible offset telescoping lift arms

Also Published As

Publication number Publication date
JPS5497971U (de) 1979-07-11

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